Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. The value of C.O.P in vapour compression cycle is usually

2. The operating pressure for refrigerating units using R-12 as a refrigerant is

3. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

4. The curved lines on a psychrometric chart indicates

5. Most thermostatic expansion valves are set for a superheat of

6. The condition of refrigerant after passing through the condenser in a vapour compression system is

7. In a lithium bromide absorption refrigeration system

8. The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

9. Rating of a domestic refrigerator is of the order of

10. Which of the following is not a desirable property of a refrigerant?


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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